Performance+ Catalog sales campaigns must target which product group?

Performance+ Catalog sales campaigns are designed to maximize reach and performance by leveraging Pinterest's machine learning across your entire product catalog. Therefore, they require targeting the 'All Products' product group. This allows the algorithm to dynamically select and promote the most relevant products to users, optimizing for conversions. Leaving out product group targeting or using advertiser-created product groups would restrict the algorithm's ability to explore and find the best performing products, hindering the campaign's effectiveness. Targeting any product group not targeted by other campaigns is not a specific requirement and would also limit the campaign's scope.